Rotary drilling apparatus



March 5, 1940. H. c. JOHANSEN 2,192,192

I ROTARY DRILLING APPARATUS Original Filed July '7, 1936 1 fi v a Q K r 291.

Patented Mar. 5,1940. 2,192,192

ROTARY DRILLING APPARATUS Harry 0. Johansen, Michigan City, Ind., assignor to Sullivan Machinery Company, a corporation of Massachusetts Original application July 7, 1936, Serial No. 89,300. Divided and this application'November '19, 1938, Serial No. 241,450

9 Claims. (Cl. 25522) This invention relates to rotary drilling apparatus, and more particularly to an improved feeding, guiding and driving means for the drill rod rotating member of a rotary drilling apparaconventional hoisting mechanism, a mud pump for supplying drilling fluid to the drill hole and a fluid pump for supplying liquid under pressure to the feedingmeans, and these several members of tus. the drilling apparatus are adapted to be driven An object of this invention is to provide an imy the e i e of the automobi eproved hydraulic drill rod feeding means for a W e e g t e improved drill feeding, rotary drilling apparatus. Another object is to di g and rotatin means Li Will e oted that provide an improved feeding and guiding structhe frame 4 thereof has mounted thereon in a poture for the drill rod rotating member. A further sition P jecting upwa d above the a m ile object, is to provide improved driving means for chassis platform, parallel vertical feed cylinders the drill rod rotating member. Still another obe latter having l heads 1, 7 Supported iect is to provide an improved means for guiding Within he pper f e brackets B and bottom the drill rod during the feeding operation. Astill heads 9 Supported Within e ower rame further-object i to provide an improved feeding brackets Ill. The frame brackets Band III have and guiding tructur for a, dri11 d wh r i l bores for receiving the ends of the feed cylinders ments of the feeding means also rve a l and the cylinder heads so that the feed cylinders ments of the guiding means. Yet another object are dly supported n pos t n n the frame. is to provide an improved flexible, self-adjusting Reeipreeably mounted in the feed Cylinders are driving connection between the source of power feed pisto s ll Se ur d to Piston rods the and the drill rod rotating member whereby the ter h r extending pw rdlsf e h packed latter may be driven irrespective of its feeding po- D heads 1 0f the e y e Secured at l3 sition along its guideways. A further object is to t0 the upper s Of e Piston o d rprovide an improved drill rod feeding and gui ranged above the feed cylinders are transverse ing structure which is extremely rugged and frames H in a turn having secured thereto parcompact. These and other objects and advanallel connecting rods I5 herein extending downtages of the invention will, however, hereinafter rd y lo g the opp s sides f nd arr n ed more fully appear, parallel with the feed cylinders in the manner This appliction is a division of my copending Shownse depending Connecting od l5 e application, Ser. No. 89,300, filed July 7, 1936. secured at their lower ends to a transverse frame In the accompanying drawing there is shown or sliding crosshead 16 extending horizontally for purposes of illustration one form which the across the space between the paral e f d y invention may assume in practice. ders 6 and formed at its opposite ends with cylin- In this drawing: drical guides I'I slidably guided at l8 for up and Fig. 1 is an end elevational view, with parts down sliding movement on the cylindric exterior shown in verticalsection, showing an illustrative surfaces of the pa l feed Cylinders- Journaled form of the improved drill rod feeding, guiding in this transverse frame or sliding crosshead l6 and rotating means. and located centrally between the feed cylinders Fig. 2 is a vertical sectional view taken substanis a vertical drive sleeve l9, and the frame l6 has tially on line 2--2 of Fig. 1. a chamber 20 in which are supported vertically In this illustrative embodiment of the invenspaced anti-friction bearings 2|, 2| in which the tion, the improved drill rod feeding, guiding and sleeve is journaled. Y The drive sleeve carries a rotating means generally designated l is adapted op bhuek 22 0f e conventional Screw pe for embodiment in a rotary drilling apparatus of jaw type for connecting a conventional drill rod, the portable automobile type and to be driven endi centrally through t sleeve, to the through the conventional automobile transmissleeve for rotation therewith. sion by the automobile engine. The conventional The improved means for rotating the drive automobile chassis is generally indicated at 2 in sleeve I!) to effect drill rod rotation comprises a Fig. 1 and includes aplatform having parallel side bevel gear 23 keyed to the sleeve and suitably frames 3, 3 on which the frame 4 of the feeding, journaled in the sliding crosshead l6, and meshguiding and rotating means I is mounted, the ing with and driving this bevel gear is a bevel frame 4 having lateral brackets 5 resting on and gear 24 fixed to a horizontal shaft 25 likewise suitfixed in any suitable manner to these side frame ably journaled within the sliding crosshead. The members. The drilling apparatus mounted on shaft 25 is connected through a universal joint 26 the platform of the automobile chassis embodies to a telescopic, self-adjusting'drive shaft 21, the

' REISSUED NOV 5 1940 65 comprising a frame, hydraulic feeding means on latter in turn connected through a universal Joint 28 toa horizontal longitudinally extending transmission shaft 29 operatively connected to an element of the automobile transmission. The rear wall of the drill frame 4 is slotted vertically at 30 so that, when the crosshead I6 is slid rectilinearly along the parallel feed cylinders, the slot permits free movement of the shaft 25, universal joint 26 and shaft 21 with the crosshead, so that, irrespective of the position of the latter, the drive sleeve l9 may always be driven. Fluid under pressure is adapted to be supplied to the opposite;

ends of the feed cylinders 6 through suitable conduits connected to the fluid pump of the drilling apparatus under the control of suitable valve means, so that the feed pistons I I, l I may be fed either upwardly or downwardly within the feed cylinders. When the feed pistons assume their lowermost positions within their feed cylinders, the crosshead I6 is located at the bottoms of the feed cylinders, as shown in the drawing. Of course, when the drill rod is fed in either-of opposite directions by the feed pistons, the drill rod may simultaneously be rotated through the flexible, self-adjusting drive connections.

As a result of this invention, it will be noted that an improved feeding and guiding structure is provided whereby the drill rod of .a rotary drilling apparatus may be fed and guided in an improved manner. It will further be evident that by utilizing elements of the feeding means as elements of the guiding means, the structure is rendered comparatively simple, rugged and compact in design. It will further be evident that by the provision of the improved sliding crossheadstructure or the telescopic, self-adjusting driving connections, the drill rod may be fed either upwardly and downwardly along the parallel feed cylinders while at'the same time it i may be rotated in an improved manner. Other uses and advantages of the invention ,will be clearly apparent to those skilled in the art.

While there is in this application specifically described one form which the invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a drilling apparatus, the combination comprising a frame, parallel feed cylinders sup ported by said frame, a crosshead slidably guided on said cylinders, pistons contained in said cylinders and having upwardly extending piston rods, connections between the upper ends of said piston rods and said crosshead, drill rod rotating means journaled on said crosshead, and driving means mounted on said frame and relative to which said crosshead is movable, for drivin said rotating means irrespective of ,the position of said crosshead relative to said cylinders.

2. In a drilling apparatus, the combination said frame including feeding elements providin a vertical guideway, a crosshead slidably guided on said guideway, means for supplying hydraulic pressure to said feeding means to effect movement of said crosshead vertically along said guideway, drill rod rotating means journaled on said crosshead, and driving means for said rotating means including adriving element journaled on said frame, a driving element journaled on the cross- 4 head, and a universal telescopic torque shaft connection between said driving elements whereby said rotating means may be driven irrespective of the position of said crosshead along its guideway.

3. In a drilling apparatus, the combination comprising parallel feed cylinders, pistons reciprocable in said cylinders, a crosshead guided on said cylinders, means for connecting said pistons to said crosshead whereby movement of said pis tons in said cylinders effects movement of said crosshead along said cylinders, drill rod rotating means mounted on said crosshead, and self-adjusting means for driving said rotating means irrespective of the position of said crosshead rela-- tive to said feed cylinders and including driving elements relative to which said crossheadis bodily movable. v

4. In a drilling apparatus, the combination comprising parallel feed cylinders, pistons reciprocable in said cylinders and having projecting piston rods, a crosshead guided on said cylinders, connecting rods extending along the sides of said cylinders for connecting said piston rods to said crosshead whereby movement of the pistons in said cylinders effects movement of said crosshead along said cylinders, ,drill rod rotating means mounted on said crosshead, and means for driving said rotating means irrespective of the position of said crosshead relative to said cylinders and'includingdriving elements relative to which said crosshead is bodily movable.

5. In a drilling apparatus, the combination of a support, a pair of vertical feed cylinders extending upwardly from said support, feed pistons reciprocable in said cylinders, a crosshead slidably guided on said cylinders and operatively connected to said feed pistons whereby movement of said feed pistons in said cylinders effects movement;

angle to the horizontal in a stationary position,

feed pistons reciprocablein said cylinders and having upwardly extending piston rods projecting through the top cylinder heads, a crosshead slidably guided on said cylinders therebetween and disposed near the lower ends of said cylinders when said pistons are at the lower cylinder ends, connecting rods extending parallel with and along the sides of said cylinders for connecting the upper ends of said piston rods to said crosshead whereby movement of said pistons in said cylinders effects movement of. said crosshead along said cylinders, and drill rod rotating means mounted on saidcrosshead.

7. In a drilling apparatus, the combination comprising hydraulic feed cylinder and piston feeding means including a feed cylinder containing a reciprocable feed piston, drill rod rotating means including a rotary member having an member of said rotating means is mounted, said crosshead having a portion slidingly engaging the exterior surface of said feed cylinder, an operopening adapted to receive a drill rod, means forative connection between said feed'piston and said crosshead, and" means for rotating saidrotating means irrespective of the position of said crosshead relative to said cylinder including a drive member operative-1y connected to said rotary member and relative to which said crosshead is slidable.

8. In a drilling apparatus, the combination comprising a support, a pair of parallel, vertically arranged feed cylinders mounted on said support, feed pistons reciprocable in said cylinders, a crosshead slidably guided on said cylinders therebetween, operative connections between said feed pistons and said sliding crosshead, drill rod rotating means mounted on said crosshead, and means for driving said drill rod rotating means irrespective of the position of said crosshead along said cylinders including a shaft joumaled in said crosshead, a drive shaft journaled on said support and a self-adjusting driving connection between said shafts.

9. In a, drilling apparatus, the combination comprising a frame, a pair of parallel, vertically arranged, hydraulic feed cylinders mounted 'on said frame, feed'pistons reciprocable in said cylinders, a support arranged between and guided on said cylinders and movable relative thereto in a direction longitudinally thereof, operative connections between said feed pistons and said support, drill rod rotation means mounted on said support, and means for driving said rotation means irrespective of the position of said support relative to said cylinders including a drive member journaled in said support, a drive member joumaled on said frame, and a self-adjusting HARRY C. J OHANSEN. 

